Open Music Theory is an open-source, interactive, online “text”book for college-level music theory courses. Version 2 of this textbook is collaboratively authored by Chelsey Hamm, Mark Gotham, Kyle Gullings, Bryn Hughes, Brian Jarvis, Megan Lavengood, and John Peterson.

Each author led certain parts of the textbook. Dr. Hamm led fundamentals and co-led Post-tonal; Dr. Gotham led the Anthology, 12-tone Serialism, and Orchestration sections; Dr. Gullings led the assignments and workbook for all chapters; Dr. Hughes co-led Pop and Post-tonal; Drs. Jarvis and Peterson led Harmony and Form; Dr. Lavengood led Jazz and co-led Pop and edited many of the chapters of the book. Furthermore, each chapter individually lists the authors that wrote that chapter.

While many chapters are entirely new to OMT Version 2, we are indebted to the vision of OMT Version 1. Version 1 was built on resources authored by Kris Shaffer, Bryn Hughes, and Brian Moseley, edited by Kris Shaffer and Robin Wharton, and is published by Hybrid Pedagogy Publishing.